1/* $NetBSD: signal.h,v 1.60 2024/09/09 21:19:54 rillig Exp $ */
2
3/*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)signal.h 8.3 (Berkeley) 3/30/94
32 */
33
34#ifndef _SIGNAL_H_
35#define _SIGNAL_H_
36
37#include <sys/cdefs.h>
38#include <sys/featuretest.h>
39
40#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
41 defined(_NETBSD_SOURCE)
42#include <sys/types.h>
43#endif
44
45#include <sys/signal.h>
46
47__BEGIN_DECLS
48#if defined(_NETBSD_SOURCE)
49extern const char *const *sys_signame __RENAME(__sys_signame14);
50#ifndef __SYS_SIGLIST_DECLARED
51#define __SYS_SIGLIST_DECLARED
52/* also in unistd.h */
53extern const char *const *sys_siglist __RENAME(__sys_siglist14);
54#endif /* __SYS_SIGLIST_DECLARED */
55extern const int sys_nsig __RENAME(__sys_nsig14);
56#endif
57
58int raise(int);
59
60#if defined(_NETBSD_SOURCE)
61const char *signalname(int);
62int signalnext(int);
63int signalnumber(const char *);
64#endif
65
66#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
67 defined(_NETBSD_SOURCE)
68int kill(pid_t, int);
69int __sigaction_siginfo(int, const struct sigaction * __restrict,
70 struct sigaction * __restrict);
71
72#if (_POSIX_C_SOURCE - 0L) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
73 defined(_NETBSD_SOURCE)
74int pthread_sigmask(int, const sigset_t * __restrict,
75 sigset_t * __restrict);
76int pthread_kill(pthread_t, int);
77int __libc_thr_sigsetmask(int, const sigset_t * __restrict,
78 sigset_t * __restrict);
79#ifndef __LIBPTHREAD_SOURCE__
80#define pthread_sigmask __libc_thr_sigsetmask
81#endif /* __LIBPTHREAD_SOURCE__ */
82#endif
83
84#ifndef __LIBC12_SOURCE__
85int sigaction(int, const struct sigaction * __restrict,
86 struct sigaction * __restrict) __RENAME(__sigaction_siginfo);
87int sigaddset(sigset_t *, int) __RENAME(__sigaddset14);
88int sigdelset(sigset_t *, int) __RENAME(__sigdelset14);
89int sigemptyset(sigset_t *) __RENAME(__sigemptyset14);
90int sigfillset(sigset_t *) __RENAME(__sigfillset14);
91int sigismember(const sigset_t *, int) __RENAME(__sigismember14);
92int sigpending(sigset_t *) __RENAME(__sigpending14);
93int sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict)
94 __RENAME(__sigprocmask14);
95int sigsuspend(const sigset_t *) __RENAME(__sigsuspend14);
96
97#if defined(__c99inline) || defined(__SIGSETOPS_BODY)
98
99#if defined(__SIGSETOPS_BODY)
100#undef __c99inline
101#define __c99inline
102#endif
103
104/* note: this appears in both errno.h and signal.h */
105#ifndef __errno
106int *__errno(void);
107#define __errno __errno
108#endif
109
110/* the same as "errno" - but signal.h is not allowed to define that */
111#ifndef ___errno
112#define ___errno (*__errno())
113#endif
114
115__c99inline int
116sigaddset(sigset_t *set, int signo)
117{
118 if (signo <= 0 || signo >= _NSIG) {
119 ___errno = 22; /* EINVAL */
120 return (-1);
121 }
122 __sigaddset(set, signo);
123 return (0);
124}
125
126__c99inline int
127sigdelset(sigset_t *set, int signo)
128{
129 if (signo <= 0 || signo >= _NSIG) {
130 ___errno = 22; /* EINVAL */
131 return (-1);
132 }
133 __sigdelset(set, signo);
134 return (0);
135}
136
137__c99inline int
138sigismember(const sigset_t *set, int signo)
139{
140 if (signo <= 0 || signo >= _NSIG) {
141 ___errno = 22; /* EINVAL */
142 return (-1);
143 }
144 return (__sigismember(set, signo));
145}
146
147__c99inline int
148sigemptyset(sigset_t *set)
149{
150 __sigemptyset(set);
151 return (0);
152}
153
154__c99inline int
155sigfillset(sigset_t *set)
156{
157 __sigfillset(set);
158 return (0);
159}
160#endif /* __c99inline */
161#endif /* !__LIBC12_SOURCE__ */
162
163/*
164 * X/Open CAE Specification Issue 4 Version 2
165 */
166#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
167 (_XOPEN_SOURCE - 0) >= 500 || (_POSIX_C_SOURCE - 0) >= 200809L || \
168 defined(_NETBSD_SOURCE)
169int killpg(pid_t, int);
170int siginterrupt(int, int);
171int sigstack(const struct sigstack *, struct sigstack *);
172#ifndef __LIBC12_SOURCE__
173int sigaltstack(const stack_t * __restrict, stack_t * __restrict)
174 __RENAME(__sigaltstack14);
175#endif
176int sighold(int);
177int sigignore(int);
178int sigpause(int);
179int sigrelse(int);
180void (*sigset (int, void (*)(int)))(int);
181#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500
182 * || _POSIX_C_SOURCE >= 200809L || _NETBSD_SOURCE
183 */
184
185
186/*
187 * X/Open CAE Specification Issue 5; IEEE Std 1003.1b-1993 (POSIX)
188 */
189#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
190 defined(_NETBSD_SOURCE)
191int sigwait (const sigset_t * __restrict, int * __restrict);
192int sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict);
193void psiginfo(const siginfo_t *, const char *);
194
195#ifndef __LIBC12_SOURCE__
196#include <sys/timespec.h>
197int sigtimedwait(const sigset_t * __restrict,
198 siginfo_t * __restrict, const struct timespec * __restrict)
199 __RENAME(__sigtimedwait50);
200int __sigtimedwait(const sigset_t * __restrict,
201 siginfo_t * __restrict, struct timespec * __restrict)
202 __RENAME(____sigtimedwait50);
203#endif
204#endif /* _POSIX_C_SOURCE >= 199309L || _XOPEN_SOURCE_EXTENDED || ... */
205
206
207#if defined(_NETBSD_SOURCE)
208#ifndef __PSIGNAL_DECLARED
209#define __PSIGNAL_DECLARED
210/* also in unistd.h */
211void psignal(int, const char *);
212#endif /* __PSIGNAL_DECLARED */
213int sigblock(int);
214int sigsetmask(int);
215#endif /* _NETBSD_SOURCE */
216
217int __sigtramp_check_np(void *);
218
219#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
220__END_DECLS
221
222#endif /* !_SIGNAL_H_ */